已知: (1)Zn(s)+1/2O2(g)=ZnO(s) ΔH=-348.3 kJ/mol
(2)2Ag(s)+1/2O2(g)=Ag2O(s) ΔH=-31.0 kJ/mol
则Zn O(s)+2Ag(s)=Zn(s)+Ag2 O(s)的△H 等于()
A. -317.3kJ/mol B. -379.3kJ/mol C. +317.3kJ/mol D. -332.8kJ/mol
高二化学选择题中等难度题
已知:(1)Zn(s)+ 1/2O2(g)=ZnO(s),ΔH= –348.3kJ/mol
(2) Zn(s)+ Ag2O(s)=ZnO(s)+ 2Ag(s),ΔH= –317.3kJ/mol
则2Ag(s)+ 1/2O2(g)=Ag2O(s)的ΔH等于( )
A.31.0kJ/mol B.-665.6kJ/mol C.332.8 kJ/mol D.-31.0 kJ/mol
高二化学选择题中等难度题查看答案及解析
已知: (1)Zn(s)+1/2O2(g)=ZnO(s) ΔH=-348.3 kJ/mol
(2)2Ag(s)+1/2O2(g)=Ag2O(s) ΔH=-31.0 kJ/mol
则Zn O(s)+2Ag(s)=Zn(s)+Ag2 O(s)的△H 等于()
A. -317.3kJ/mol B. -379.3kJ/mol C. +317.3kJ/mol D. -332.8kJ/mol
高二化学选择题中等难度题查看答案及解析
已知:(1)Zn(s)+1/2O2(g) = ZnO(s) △H =-348.3 kJ/mol
(2) 2Ag(s)+1/2O2(g) = Ag2O(s) △H =-31.0 kJ/mol
则Zn(s)+Ag2O(s) = ZnO(s)+2Ag(s)的△H等于( )
A. -317.3 kJ/mol B. -379.3 kJ/mol
C. -332.8 kJ/mol D. 317.3 kJ/mol
高二化学选择题简单题查看答案及解析
已知:①Zn(s)+1/2O2(g)=ZnO(s) ΔH=-348.3kJ·mol-1
②2Ag(s)+1/2O2(g)=Ag2O(s) ΔH=-31.0kJ·mol-1
则Zn与Ag2O反应生成ZnO和Ag的热化学方程式为
A. Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s) ΔH=+317.3kJ·mol-1
B. Zn+Ag2O=ZnO+2Ag ΔH=+317.3kJ·mol-1
C. Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s) ΔH=-317.3kJ
D. 2Zn(s)+2Ag2O(s)=2ZnO(s)+4Ag(s) ΔH=-634.6 kJ·mol-1
高二化学单选题简单题查看答案及解析
已知:(1)Zn(s)+1/2O2(g)=ZnO(s) △H=-348.3kJ·mol-1 ,
(2)2Ag(s)+1/2O2(g)=Ag2O(s) △H=-31.0kJ·mol-1,
则Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s)的△H等于
A.-317.3kJ·mol-1 B.-379.3kJ·mol-1 C.-332.8kJ·mol-1 D.+317.3kJ·mol-1
高二化学选择题简单题查看答案及解析
已知:(1)Zn(s)+1/2O2(g)=ZnO(s) △H=-348.3kJ·mol-1 ,
(2)2Ag(s)+1/2O2(g)=Ag2O(s) △H=-31.0kJ·mol-1,
则Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s)的△H等于
A. -317.3kJ·mol-1 B. -379.3kJ·mol-1 C. -332.8kJ·mol-1 D. +317.3kJ·mol-1
高二化学选择题中等难度题查看答案及解析
已知: (1)Zn(s)+1/2O2(g) = ZnO(s);ΔH =-348.3 kJ/mol;(2)2Ag(s)+1/2O2(g) = Ag2O(s);ΔH =-31.0 kJ/mol,则Zn(s)+Ag2O(s) = ZnO(s)+2Ag(s)的ΔH等于( )
A.-317.3 kJ/mol B.-379.3 kJ/mol C.-332.8 kJ/mol D.317.3 kJ/mol
高二化学选择题简单题查看答案及解析
已知:(1)Zn(s)+1/2O2(g)==ZnO(s),ΔH= -348.3kJ/mol (2) 2Ag(s)+1/2 O2(g)== Ag2O(s),ΔH= -31.0kJ/mol 则ZnO(s)+ 2Ag(s)== Zn(s)+ Ag2O(s)的ΔH等于( )
A. -317.3kJ/mol B. -379.3kJ/mol C. -332.8 kJ/mol D. 317.3 kJ/mol
高二化学单选题中等难度题查看答案及解析
高二化学解答题中等难度题查看答案及解析
高二化学解答题中等难度题查看答案及解析